1D1P

CRYSTAL STRUCTURE OF A YEAST LOW MOLECULAR WEIGHT PROTEIN TYROSINE PHOSPHATASE (LTP1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.169 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structures of a low-molecular weight protein tyrosine phosphatase from Saccharomyces cerevisiae and its complex with the substrate p-nitrophenyl phosphate.

Wang, S.Tabernero, L.Zhang, M.Harms, E.Van Etten, R.L.Stauffacher, C.V.

(2000) Biochemistry 39: 1903-1914

  • DOI: 10.1021/bi991348d
  • Primary Citation of Related Structures:  
    1D1P, 1D1Q

  • PubMed Abstract: 
  • Low-molecular weight protein tyrosine phosphatases are virtually ubiquitous, which implies that they have important cellular functions. We present here the 2.2 A resolution X-ray crystallographic structure of wild-type LTP1, a low-molecular weight protein tyrosine phosphatase from Saccharomyces cerevisiae ...

    Low-molecular weight protein tyrosine phosphatases are virtually ubiquitous, which implies that they have important cellular functions. We present here the 2.2 A resolution X-ray crystallographic structure of wild-type LTP1, a low-molecular weight protein tyrosine phosphatase from Saccharomyces cerevisiae. We also present the structure of an inactive mutant substrate complex of LTP1 with p-nitrophenyl phosphate (pNPP) at a resolution of 1.7 A. The crystal structures of the wild-type protein and of the inactive mutant both have two molecules per asymmetric unit. The wild-type protein crystal was grown in HEPES buffer, a sulfonate anion that resembles the phosphate substrate, and a HEPES molecule was found with nearly full occupancy in the active site. Although the fold of LTP1 resembles that of its bovine counterpart BPTP, there are significant changes around the active site that explain differences in their kinetic behavior. In the crystal of the inactive mutant of LTP1, one molecule has a pNPP in the active site, while the other has a phosphate ion. The aromatic residues lining the walls of the active site cavity exhibit large relative movements between the two molecules. The phosphate groups present in the structures of the mutant protein bind more deeply in the active site (that is, closer to the position of nucleophilic cysteine side chain) than does the sulfonate group of the HEPES molecule in the wild-type structure. This further confirms the important role of the phosphate-binding loop in stabilizing the deep binding position of the phosphate group, thus helping to bring the phosphate close to the thiolate anion of nucleophilic cysteine, and facilitating the formation of the phosphoenzyme intermediate.


    Related Citations: 
    • Cloning and Characterization of a Saccharomyces cerevisiae Gene Encoding the Low Molecular Weight Protein-tyrosine Phosphatase
      Ostanin, K., Pokalsky, C., Wang, S., Van Etten, R.L.
      (1995) J Biol Chem 270: 18491

    Organizational Affiliation

    Departments of Chemistry and Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TYROSINE PHOSPHATASEA, B160Saccharomyces cerevisiaeMutation(s): 0 
EC: 3.1.3.48 (PDB Primary Data), 3.1.3.2 (UniProt)
UniProt
Find proteins for P40347 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40347 
Go to UniProtKB:  P40347
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

Download Ideal Coordinates CCD File 
C [auth A], D [auth B]4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
EPE PDBBind:  1D1P Ki: 2.50e+5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.169 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.586α = 90
b = 67.647β = 90
c = 115.162γ = 90
Software Package:
Software NamePurpose
AMoREphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-03-08
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance